Narrowest part of male urethra -

Ans. is 'b' i.e., Membranous o Narrowest and least dilatable part of male urethra - membranous urethra.o Widest and most dilatable part of male urethra - Prostatic urethra.o Shortest part of male urethra - Membranous urethra.o Longest part of male urethra - Penile urethra.